The doctrine of the Trinity identifies the Holy Spirit as the third person in the Godhead. This teaching was established at ...

for there is only one God, the almighty Father, his only Son and the Holy Spirit: the Most Holy Trinity ... came to recognize and receive the Symbol of 381. The use of this formula in the ...

It is the ancient baptismal symbol ... the Father almighty, creator of heaven and earth, and in Jesus Christ, his only Son, our Lord, who was conceived by the Holy Spirit and born of the Virgin ...

NICEA: On May 20, the Christian world will commemorate the 1700th anniversary of the opening of the first ecumenical council, ...